The Doctor and his companionAnna travelled to Exeter in the 21st century where they encountered one of the Doctor's previous companions, Tegan, who cursed the Doctor for what her time with him had done to her. Later in the TARDIS, Anna found a diary that Tegan had kept during her travels in the TARDIS. The diary warned the reader that the Doctor manipulated his companions into killing for him. Anna realised that this had happened to her and asked the Doctor to take her home, which he reluctantly did. (PROSE: Good Companions)

After finding another companion, Guinevere Winchester, the Doctor was sent by the Time Lords to the Schrödinger Institute, a research station in deep space where sabotage had caused a temporal echo to occur. The temporal echo meant that the Doctor and Guinevere could not be seen by anyone or even touch anything until someone else did so. The Doctor managed to rewire a control box after a technician had worked on it. This broke the echo, allowing the Doctor and Guinevere to leave. (PROSE: Revenants)

Travelling alone, the Doctor went to visit his old friend, Greenaway. The Doctor told Greenaway that his life support machine was unable to keep him alive any longer. In an act of mercy the Doctor turned off the machine and left in his TARDIS, unaware that Greenaway managed to survive. (PROSE: Greenaway)

The Doctor became known as Merlin, and resided in Arthur's World for some time. Merlin fought Morgaine in this reality on several occasions. After she bound him in ice in Breceliande, the Doctor summoned a dragon to melt it. Songs were sung among the people of the Doctor's "power over light, darkness and the elementals".

He taught King Arthur since he was a child, and saved his life on many occasions. When Arthur was old and had almost lost the battle to Morgaine, Merlin spoke with him of how the battle would end. Merlin took Excalibur from him and sent it back in time so that his previous incarnation would use it to defeat Morgaine. (PROSE: Battlefield)

This Doctor wore a mustard yellow waistcoat over a crumpled white dress shirt, open toed sandals and socks, bracelets, and a tatty Afghan coat. He had curly red hair and was very short. (PROSE: Battlefield, Revenants) He also had a strong scent of cologne. (PROSE: Greenaway)